#include <stdio.h>
#include <math.h>

//https://www.nowcoder.com/practice/422f6341cf1b4212a7f8c703df111389?tpId=107&&tqId=33306&rp=1&ru=/ta/beginner-programmers&qru=/ta/beginner-programmers/question-ranking

int main() {
    double h = 0;
    double m = 0;
    double BIM = 0;
    scanf("%lf%lf", &m, &h);
    BIM = m * 10000 / pow(h, 2);
    printf("%.2f", BIM);
    return 0;
}

